seamless and welded steel pipe external coating

seamless and welded steel pipe external coating

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

water pipeline inner-layer tape
1 Butyl rubber as adhesive
2. SGS test report and DVGW certificate
3. corrosion protection

water pipeline inner-layer tape

State-of-the-Art Pipeline Protection for All Climates & Environments

System description:

WATER PIPELINE Inner -layer tape also be called pipe wrap anti-corrosion tape, polyethylene wrap tape.

water pipeline Inner-layer tapeT100 is engineered to assure a high bond to the primed pipe surface with excellent conformability characteristics, aggressive adhesive for corrosion protection and repair of main line coatings.

Inner-layer tapeT100 series is cold applied tape coating system for corrosion protection of Oil, Gas, Petrochemical, and Waste Waterburied pipeline, pipe can be buried, also can be underground ,overhead ,onshore and offshore .

Structure of water pipeline inner wrap tape
The specification of the tape consists of two layers, adhesive layer and film backing
Adhesive: butyl rubber
Film backing: Special blend of stabilized polyethylene

Features & Benefits

Provides a permanent bond to the primed steel pipes surface and provides protection against chemical electrolytic corrosion for underground pipelines.
long term corrosion protection
Worldwide reference lists. Established in-ground history
High chemical resistance under service temperature.
Outstanding electric property and permanent adhesion.
Cold applied, No release liner. Makes installation fast and easy.
Complies with EN-DIN 30672 and AWWAC-214 international standards and also ASTM standards.
Be used for water pipeline corrosion protection

System Properties

Type	T138	T 150		T165	T180	T 250	T265	T280
Thickness	15mil 0.38mm	20mil 0.508mm		25mil 0.635mm	30mil 0.762mm	20mil 0.508mm	25mil 0.635mm	30mil 0.762mm
Backing	9mil 0.229mm	9mil 0.241mm		10mil 0.25mm	10mil 0.25mm	15mil 0.38mm	20mil 0.508mm	25mil 0635mm
Adhesive	6mil 0.152mm	11mil 0.279mm		15mil 0.381mm	20mil 0.508mm	5mil 0.127mm	5mil 0.127mm	5mil 0.127mm
When used for ductile iron pipes inner layer 980-20 or 980-25 and outer layer 955-20 or 955-25 are recommended.
Elongation	³300%					³400%
Tensile Strength	55 N/cm					70 N/cm
Color	Black					White
Peel Adhesion to Primed Pipe			33 N/cm
Dielectric Strength			30 KV
Dielectric Breakdown			26 KV/mm
Cathodic Disbandment			0.24 in radius 6.4 mm
Water Vapor Transmission Rate			< 0.1%
Volume Resistivity			2.5 x 10¹⁵ ohm.cm
Impact resistance			5.5Nm
Penetration Resistance			<15%
Performance			AWWA C-209,ASTM D 1000,EN 12068

Order information

Length	100ft(30 M),200ft(60 M),400ft(120 M),800ft(240 M)
Width	2’’(50mm),4’’(100mm),6’’(150mm),17’(450mm),32’’(800mm)

Q: How are steel pipes used in the construction of chemical plants?: Steel pipes are commonly used in the construction of chemical plants for various purposes. They are primarily utilized for transporting fluids and gases, such as chemicals, water, and steam, throughout the facility. These pipes are selected for their durability, strength, and resistance to corrosion, which is crucial in an environment where exposure to harsh chemicals is common. Steel pipes are also used for structural support, such as in the construction of platforms, walkways, and pipe racks. Additionally, they can be employed for ventilation and exhaust systems, as well as for fire protection systems in chemical plants. Overall, steel pipes play a vital role in ensuring the safe and efficient operation of chemical plants.

Q: What are the factors to consider when selecting pipe materials for high-temperature applications?: When selecting pipe materials for high-temperature applications, it is important to consider factors such as the maximum operating temperature, corrosion resistance, thermal expansion properties, mechanical strength, and cost. The chosen material should be able to withstand the anticipated temperature without deformation or degradation, resist corrosion from the process fluid or environment, have a low coefficient of thermal expansion to minimize stress on the pipe, possess sufficient mechanical strength to handle the pressure and load, and be cost-effective for the specific application.

Q: How are steel pipes used in stadium construction?: Steel pipes are commonly used in stadium construction for various purposes such as structural support, roofing, and plumbing systems. They provide strength and durability to the overall structure of the stadium, allowing it to withstand heavy loads and adverse weather conditions. Steel pipes are also used for the installation of HVAC systems, water supply lines, and drainage systems within the stadium.

Q: How are steel pipes used in fire protection systems?: Steel pipes are commonly used in fire protection systems because of their durability and resistance to high temperatures. They are used to transport water or other fire suppressants to sprinkler heads or fire hydrants, ensuring quick and efficient extinguishing of fires. The strength of steel pipes also allows them to withstand the pressure and force of water flow, making them a reliable choice for fire protection systems.

Q: What is the role of steel pipes in the transportation of water?: Steel pipes are of utmost importance in the transportation of water due to their durability and strength. They find extensive use in diverse water supply systems, including municipal water distribution networks, irrigation systems, and industrial water transportation. One of the primary benefits of steel pipes lies in their capacity to endure high pressure and deliver water reliably over long distances. The strength of steel enables the construction of pipelines with larger diameters, facilitating the efficient movement of substantial water volumes. Additionally, steel pipes exhibit remarkable resistance to corrosion, a critical characteristic when conveying water that may contain different minerals, chemicals, or contaminants. The corrosion-resistant properties of steel pipes ensure that the water quality remains uncompromised throughout the transportation process. Furthermore, steel pipes offer exceptional structural integrity, rendering them suitable for both underground and above-ground installations. They can withstand extreme weather conditions, seismic activity, and heavy loads, thereby ensuring the longevity and dependability of the water transportation system. Moreover, steel pipes are easy to install and maintain, apart from being robust and durable. They can be seamlessly welded together, resulting in a pipeline with minimal leakage points. Regular inspections and maintenance help identify potential issues or damages, guaranteeing an uninterrupted flow of water. In conclusion, steel pipes play a critical role in water transportation, serving as a strong and reliable conduit. Their ability to withstand high pressure, resist corrosion, and maintain water quality make them an ideal choice for various water supply systems, contributing to the efficient and sustainable distribution of water resources.

Q: Can steel pipes be used for bridge piling?: Yes, steel pipes can be used for bridge piling. Steel pipes are commonly used in bridge construction due to their strength, durability, and resistance to corrosion. They provide sufficient load-bearing capacity and can be driven deep into the ground to provide stable support for bridges.

Q: What are the different types of pipe fittings used with steel pipes?: There are several types of pipe fittings commonly used with steel pipes, including elbows, tees, reducers, couplings, unions, flanges, and valves.

Q: What are the dimensions of steel pipes?: Steel pipes can have varying dimensions depending on specific requirements and industry standards. However, they generally adhere to standardized measurements for their outer diameter (OD), wall thickness, and length. The OD of steel pipes can range from small sizes, such as ¼ inch (6.35 mm) or ⅛ inch (3.175 mm), to larger sizes like 48 inches (1219.2 mm) or more for specialty applications. The wall thickness of steel pipes can also vary significantly, ranging from thin pipes with a few millimeters of thickness to thick pipes with several inches of thickness. Regarding length, standard steel pipes are typically produced in lengths of 20 feet (6.1 meters) or 40 feet (12.2 meters). However, custom lengths can also be manufactured to meet specific project requirements. It is important to note that these dimensions are only general examples and may not encompass all potential variations in steel pipe sizes. Therefore, consulting relevant industry standards and specifications is always recommended to determine the precise dimensions necessary for a specific application.

Q: Galvanized steel pipe in addition to good rust resistance, what are the advantages?: Galvanized steel is cracking for 39 days and will not, especially suitable for Northern very cold environment.

Q: How do you calculate the pipe friction loss coefficient for steel pipes?: To determine the pipe friction loss coefficient for steel pipes, it is necessary to take into account several factors. One commonly used approach is the utilization of the Darcy-Weisbach equation, which establishes a relationship between the frictional head loss in a pipe and the flow rate, pipe diameter, pipe length, fluid properties, and the pipe roughness coefficient. The Darcy-Weisbach equation can be presented as follows: The head loss due to friction, denoted as hf, can be calculated using the formula (f * L * V^2) / (2 * g * D), where: - f represents the pipe friction factor, - L corresponds to the pipe length, - V denotes the fluid velocity, - g symbolizes the acceleration due to gravity, and - D represents the pipe diameter. Determining the pipe friction factor, f, is crucial. For steel pipes, this factor relies on the pipe roughness coefficient, which indicates the relative roughness of the pipe. The relative roughness is determined by dividing the absolute roughness of the pipe surface by the pipe diameter. The pipe roughness coefficient can be obtained from different sources, including manufacturer specifications, engineering handbooks, or experimental data. It is imperative to ensure that the roughness coefficient used aligns with the specific type and condition of the steel pipe under analysis. Once the pipe roughness coefficient is obtained, it can be employed to calculate the pipe friction factor through empirical correlations or charts. These correlations often involve the Reynolds number, a dimensionless quantity that characterizes the flow regime. By substituting the determined pipe friction factor into the Darcy-Weisbach equation, it becomes possible to calculate the head loss due to friction for steel pipes. This value is indispensable in the design of piping systems, determination of pump requirements, or estimation of energy consumption in fluid flow applications.

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